:root{--color-primary:#6366f1;--color-primary-d:#4f46e5;--color-secondary:#f59e0b;--color-success:#10b981;--color-danger:#ef4444;--color-bg:#0f0f1a;--color-surface:#1a1a2e;--color-surface2:#16213e;--color-border:#2d2d4e;--color-text:#e2e8f0;--color-text-muted:#94a3b8;--radius-sm:6px;--radius-md:12px;--radius-lg:20px;--shadow-card:0 4px 24px #6366f126;--font-sans:"Inter", "PingFang SC", "Microsoft YaHei", sans-serif;--transition:.2s ease}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;font-size:16px}body{font-family:var(--font-sans);background:var(--color-bg);color:var(--color-text);-webkit-font-smoothing:antialiased;line-height:1.6}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}ul{list-style:none}img{max-width:100%;height:auto;display:block}button{cursor:pointer;font-family:inherit}.skip-link{background:var(--color-primary);color:#fff;border-radius:0 0 var(--radius-sm) 0;z-index:9999;transition:top var(--transition);padding:8px 16px;font-weight:600;position:absolute;top:-100px;left:0}.skip-link:focus{top:0}.app-wrapper{flex-direction:column;min-height:100vh;display:flex}.app-header{background:var(--color-surface);border-bottom:1px solid var(--color-border);z-index:100;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);position:sticky;top:0}.header-inner{align-items:center;gap:32px;max-width:1200px;height:60px;margin:0 auto;padding:0 24px;display:flex}.logo{white-space:nowrap;color:var(--color-text);align-items:center;gap:8px;font-size:1rem;font-weight:700;display:flex}.main-nav ul{flex-wrap:wrap;gap:4px;display:flex}.nav-link{border-radius:var(--radius-sm);color:var(--color-text-muted);transition:background var(--transition), color var(--transition);white-space:nowrap;padding:6px 12px;font-size:.9rem}.nav-link:hover{background:var(--color-surface2);color:var(--color-text);text-decoration:none}.nav-link.active{background:var(--color-primary);color:#fff}.app-main{flex:1;width:100%;max-width:1200px;margin:0 auto;padding:32px 24px}.app-footer{background:var(--color-surface);border-top:1px solid var(--color-border);text-align:center;color:var(--color-text-muted);padding:16px 24px;font-size:.85rem}.page-loader{color:var(--color-text-muted);flex-direction:column;align-items:center;gap:16px;padding:80px 0;display:flex}.loader-spinner{border:3px solid var(--color-border);border-top-color:var(--color-primary);border-radius:50%;width:40px;height:40px;animation:.7s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.error-fallback{text-align:center;padding:80px 24px}.error-fallback button{background:var(--color-primary);color:#fff;border-radius:var(--radius-sm);border:none;margin-top:16px;padding:10px 24px;font-size:1rem}.not-found{text-align:center;padding:80px 24px}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-card);padding:24px}.card h2,.card h3{margin-bottom:12px;font-size:1.1rem}.code-block{border:1px solid var(--color-border);border-radius:var(--radius-sm);white-space:pre;color:#c9d1d9;tab-size:2;background:#0d1117;padding:16px;font-family:Fira Code,Cascadia Code,Consolas,monospace;font-size:.85rem;line-height:1.6;overflow-x:auto}.code-block .kw{color:#ff7b72}.code-block .fn{color:#d2a8ff}.code-block .str{color:#a5d6ff}.code-block .cm{color:#8b949e}.badge{border-radius:999px;padding:2px 10px;font-size:.75rem;font-weight:600;display:inline-block}.badge-primary{color:#a5b4fc;background:#6366f133}.badge-success{color:#6ee7b7;background:#10b98133}.badge-warning{color:#fcd34d;background:#f59e0b33}.badge-danger{color:#fca5a5;background:#ef444433}.compare-grid{grid-template-columns:1fr 1fr;gap:16px;display:grid}.compare-grid .before{border-left:3px solid var(--color-danger)}.compare-grid .after{border-left:3px solid var(--color-success)}.data-table{border-collapse:collapse;width:100%;font-size:.9rem}.data-table th,.data-table td{border-bottom:1px solid var(--color-border);text-align:left;padding:10px 14px}.data-table th{background:var(--color-surface2);color:var(--color-text-muted);font-weight:600}.data-table tr:hover td{background:#6366f10d}.btn{border-radius:var(--radius-sm);transition:opacity var(--transition), transform var(--transition);border:none;align-items:center;gap:6px;padding:8px 18px;font-size:.9rem;font-weight:500;display:inline-flex}.btn:hover{opacity:.88;transform:translateY(-1px)}.btn:active{transform:translateY(0)}.btn-primary{background:var(--color-primary);color:#fff}.btn-success{background:var(--color-success);color:#fff}.btn-danger{background:var(--color-danger);color:#fff}.btn-ghost{background:var(--color-surface2);color:var(--color-text)}.progress-bar{background:var(--color-border);border-radius:999px;height:8px;overflow:hidden}.progress-fill{border-radius:999px;height:100%;transition:width 1s}:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}@media (width<=768px){.app-main{padding:16px}.compare-grid{grid-template-columns:1fr}.header-inner{gap:12px}.nav-link{padding:5px 8px;font-size:.82rem}.logo span:last-child{display:none}}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}